Lost childhood

 I feel like I am a puzzle that sits at the bottom of an old toy chest; the kids don’t use it anymore so it’s up in the attic. The kids grew up and every now and then they bring out the toy chest for their own kids. Only when they bring the old chest back down, they remember that some of the pieces to their favorite puzzle are missing. So they bring out all of the other toys but they lay the puzzle back at the bottom of the chest. Maybe one day, they say, because they just don't have time to find the missing pieces.